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Pretty similar are:
Hypselodoris maculosa which has multiple longitudinal white lines and up to three reddish bands on the white rhinophores,
Thorunna australis which differs by two longitudinal white lines, one on either side of the mantle and always one reddish band on the white rhinophores,
Thorunna cf. florens which differs by two broad dark pink longitudinal bands, outlined in opaque white, by orange rhinophores with a white spot, and by a transverse orange patch on the front of the mantle.
This species was posted on 6 September 2004 at these websites as Pectenodoris aurora Johnson & Gosliner, 1998,
R.F. Johnson & Gosliner (2012) moved it to the genus Mexichromis Bertsch, 1977,
I changed the authority on 29 April 2016 according to WoRMS.
Rebecca Fay Johnson & Terrence M. Gosliner. 2012.
Traditional Taxonomic Groupings Mask Evolutionary History:
A Molecular Phylogeny and New Classification of the Chromodorid Nudibranchs. online at
Bouchet, P. (2015). Mexichromis aurora (R. F. Johnson & Gosliner, 1998). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=597877 on 2016-04-29
More information on Mexichromis aurora as Pectenodoris aurora are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2017), published 19 September 2017, Mexichromis aurora (R.F. Johnson & Gosliner, 1998)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Mexichromis_aurora.htm